Merge tag 'for-6.17/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mikulas Patocka:

 - fix integer overflow in dm-stripe

 - limit tag size in dm-integrity to 255 bytes

 - fix 'alignment inconsistency' warning in dm-raid

* tag 'for-6.17/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm-raid: don't set io_min and io_opt for raid1
  dm-integrity: limit MAX_TAG_SIZE to 255
  dm-stripe: fix a possible integer overflow

Author: torvalds

drivers/md/dm-integrity.c

@@ -133,7 +133,7 @@ struct journal_sector {
 	commit_id_t commit_id;
 };
 
-#define MAX_TAG_SIZE			(JOURNAL_SECTOR_DATA - JOURNAL_MAC_PER_SECTOR - offsetof(struct journal_entry, last_bytes[MAX_SECTORS_PER_BLOCK]))
+#define MAX_TAG_SIZE			255
 
 #define METADATA_PADDING_SECTORS	8
 

drivers/md/dm-raid.c

@@ -3813,8 +3813,10 @@ static void raid_io_hints(struct dm_target *ti, struct queue_limits *limits)
 	struct raid_set *rs = ti->private;
 	unsigned int chunk_size_bytes = to_bytes(rs->md.chunk_sectors);
 
-	limits->io_min = chunk_size_bytes;
-	limits->io_opt = chunk_size_bytes * mddev_data_stripes(rs);
+	if (chunk_size_bytes) {
+		limits->io_min = chunk_size_bytes;
+		limits->io_opt = chunk_size_bytes * mddev_data_stripes(rs);
+	}
 }
 
 static void raid_presuspend(struct dm_target *ti)

drivers/md/dm-stripe.c

@@ -456,11 +456,15 @@ static void stripe_io_hints(struct dm_target *ti,
 			    struct queue_limits *limits)
 {
 	struct stripe_c *sc = ti->private;
-	unsigned int chunk_size = sc->chunk_size << SECTOR_SHIFT;
+	unsigned int io_min, io_opt;
 
 	limits->chunk_sectors = sc->chunk_size;
-	limits->io_min = chunk_size;
-	limits->io_opt = chunk_size * sc->stripes;
+
+	if (!check_shl_overflow(sc->chunk_size, SECTOR_SHIFT, &io_min) &&
+	    !check_mul_overflow(io_min, sc->stripes, &io_opt)) {
+		limits->io_min = io_min;
+		limits->io_opt = io_opt;
+	}
 }
 
 static struct target_type stripe_target = {